Vacuum cleaner



FIG. 1 is a front perspective view of a first embodiment of a vacuum cleaner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a front perspective view of a second embodiment thereof;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a back view of FIG. 8;

FIG. 11 is a right side view of FIG. 8;

FIG. 12 is a bottom view of FIG. 8;

FIG. 13 is a left side view of FIG. 8; and,

FIG. 14 is a top view of FIG. 8. 

The ornamental design for a vacuum cleaner, as shown and described. 